Accession Number:

ADA252692

Title:

A Cognitive Approach to the Design of Information Graphics

Descriptive Note:

Technical rept. 15 Sep 1986-14 Sep 1991

Corporate Author:

CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF PSYCHOLOGY

Personal Author(s):

Report Date:

1991-09-14

Pagination or Media Count:

66.0

Abstract:

Graphical representations popularly thought to be useful for communicating and processing Information yield mixed results when tested with real users. Cognitive research suggests that current design methodologies fall to exploit the potentials of graphics for expediting human performance of information-processing tasks 1 allowing users to substitute less effortful visual procedures in place of more demanding non-visual procedures and 2 streamlining users search for information by supporting visual search heuristics. BOZ is a design algorithm that constructively applies cognitive principles of the efficiencies that graphical displays can offer to the problem of discovering novel displays to support specific user tasks. BOZ analyzes formal task descriptions and proposes visual displays and procedures that can help streamline performance of a task. BOZ is used to generate graphical alternatives to a standard tabular display of airline schedule information to support a set of common airline reservation tasks. Reaction time studies done with real users are reported that show that the BOZ-designed displays significantly reduce users performance time to the task. Regression analyses link the observed efficiency savings to visual procedure substitutions and pruning of research. BOZ is also shown to be useful for analyzing existing displays to discover clever design features that can then be subsequently incorporated into BOZs design algorithm. Design, Human Factors, Algorithms, Theory, Graphics Design, Task Analysis, Perception, Visual Languages, User Interface.

Subject Categories:

  • Computer Programming and Software
  • Human Factors Engineering and Man Machine Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE